Furiex irritable bowel syndrome drug succeeds in large trials

Feb 04 2014, 20:07 IST
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We believe that there are a lot of patients out there who need this drug. Reuters We believe that there are a lot of patients out there who need this drug. Reuters
SummaryThe most commonly reported side effects were constipation and nausea.

An experimental drug developed by Furiex Pharmaceuticals Inc met the main goal of a pair of large Phase III clinical trials by significantly alleviating diarrhea and abdominal pain associated with irritable bowel syndrome, the company said on Tuesday.

Based on the results of the studies, Furiex said it planned to apply by mid-year for U.S. approval of the drug, eluxadoline, to treat diarrhea-predominant irritable bowel syndrome (IBS-d), a debilitating bowel disorder that affects about 28 million people in the United States and major European markets.

The company expects to seek European approval of eluxadoline in early 2015.

"We believe that there are a lot of patients out there who need this drug. There is a huge unmet need," Furiex Chief Medical Officer June Almenoff said in a telephone interview.

Currently approved drugs for IBS address constipation associated with the disorder, but there are few options for diarrhea predominant IBS.

Furiex founder and chairman Fred Eshelman said he believes the drug has the potential for blockbuster sales, which he defined as annual sales of between $750 million and $1 billion.

Eluxadoline was tested at two doses against a placebo over the course of 12 weeks to meet requirements by the U.S. Food and Drug Administration, and for 26 weeks for European health regulators, in Phase III studies involving 2,428 patients, Furiex said.

For the combined goal of improvement in abdominal pain and stool consistency for at least half the days in the study, eluxadoline achieved a statistically significant improvement at the 100 milligram and 75 mg doses through 12 weeks in both studies. On the 26-week measure, the higher dose succeeded in both studies but the lower dose missed statistical significance in one of the two trials, according to initial results released by the company.

The success appeared to be driven by the percentage of patients reporting improvements in diarrhea, which ranged from 30 percent to 37 percent versus 22 percent and 20.9 percent for the placebo groups.

When the composite goal was broken into its two components, researchers found a numerical improvement in pain response rates that did not achieve statistical significance.

The drug appeared to be safe and well-tolerated in both studies, Furiex said. The most commonly reported side effects were constipation and nausea.

The company plans to present a far more detailed analysis of the late stage studies at an upcoming medical meeting.

"We're very excited about the path ahead and about how this can transform patients' lives," Almenoff said.

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